What does OM stand for?

Air Mongol - ICAO designator (AD)

Member of the Order of Merit - Canada (DD)

Minim Fathers (TOCD)

Mississauga Public Library, Ontario - Library symbol - National Library of Canada (NLC)

Obermanual - Upper Manual - Music

Object Machine (SAUS)

Object Management (AG)

Object Manager (SAUS)

Object Marker - Linguistics (IEL)

Object Module (SAUS)

Observer's Mate - British military (DMA)

Obtuse Marginal - Medicine (MAE)

Occipitomental - Diameter of skull

Occupational Medal - as used with special reference to Germany or Japan - Military decoration

Occupational Medicine

Ocean Mapping (SAUS)

Oceanographic and Meteorological (SAUS)

Oceanography and Meteorology

Ochsner-Mahorner - Echocardiogram (DAVI)

Oculomotor (DB)

Oduma Magazine - A publication

Odyssey of the Mind

Oesterreichische Monatsschrift fuer den Orient (BJA)

Office Management (SAUS)

Office Manager

Office Master (ELAL)

Office Messenger - Military

Office Model (SAUS)

Office of Meteorology - Emergency Management (EMA)

Officer Messenger (SAUS)

Officine Meccaniche - Italian auto manufacturer

Oil and Gas Investigation Map - United States Geological Survey (GIS)

Old Measurement

Olympus Mons - A filamentary mark on Mars

Omaha - Diocesan abbreviation - Nebraska (TOCD)

Oman - NCIC country-territory code (NCIC)

Oman - IYRU nationality code - ANSI two-letter standard code (CNC)

Omit - Telegraphy (PCTE)

Omni Mane - Every Morning - Pharmacy

On Margin - Investment term

Opaque Media - X-ray microscopy

Open Market

Open Matching - Parapsychology

Open Mouth - Doll collecting

Opera di Maria - Work of Mary - An association (EAIO)

Opera Mundi - Book-packaging firm based in Paris

Operand Manipulation (SAUS)

Operating Memorandum

Operating Memory (KSC)

Operating Method (COE)

Operational Maintenance (SAUS)

Operational Management - Computer science (IAA)

Operational Measurement - Data that are required to recalculate KPIs and KQIs (SSEC)

Operational Mid DSC or MDM (SAUS)

Operational Modeling (AAEL)

Operational Monitor (IAA)

Operation and Maintenance - Electric utility company

Operation and Management (ALAC)

Operation Mainstream (OICC)

Operation Memorandum (SAUS)

Operation Minute (HEAS)

Operation Mobilisation - Religious movement - British

Operation Monkees (EA)

Operations Maintenance

Operations Manager

Operations Manual (NITA)

Operations Memorandum - Department of Agriculture (GFGA)

Operations Module (SAUS)

Operator's Manual

Optical Man (SAUS)

Opticalman - Navy (DAVI)

Optical Master (KSC)

Optical Media - Computer graphics

Optical Metallography (SAUS)

Optical Microscope (ECII)

Optical Microscopy

Optical Modulation (SAUS)

Optical Modulator (VLIE)

Optics Module - Mid-Infrared Instrument

Optimal Mismatch (SAUS)

Optimus Maximus - Greatest and Best - Latin

Options for Men - A publication

Options Market - Finance

Oral Motor (IDYL)

Orbital Maneuvering Engine - NASA (NAKS)

Orbiter Main Engine - NASA (NAKS)

Orbit Modification (IAA)

Order of Merit

Ordnance Map (SAUS)

Ordnance Mission (AAG)

Ordo - Fratrum Minimorum - Minims of St. Francis of Paul - Roman Catholic men's religious order

Organic Matter

Organizational Maintenance (MCD)

Organized Militia (GEAB)

Organo Metallic (ACAE)

Organometallic

Orifice Meter (SAUS)

Orthogonal Memory (MHDB)

Osborne Mendel Rat - Medicine (DMAA)

Osmiophilic Layer - Botany

Osteomalacia - Medicine (MAE)

Osteomyelitis - Medicine

Osteopathic Manipulation (SAUS)

Ostmark - Monetary unit - Germany

Otitis Media - Medicine

Otolitic Membrane - Otology

Our Message

Outboard Marine - NYSE symbol

Outer Marker - Part of an instrument landing system - Aviation

Outer Membrane - Biochemistry

Out for Maintenance (SAUS)

Out of Memory - Computer science (VLIE)

Output Machine (SAUS)

Output Memory (SAUS)

Output Module

Output MUx

Outside Manufacturing

Overall Modernity - Sociological scale

Overhaul Manual (MCD)

Overland Monthly - A publication (ROG)

Overseas Mail - British

Overseas Minister - World War I - Canada

Overt Meditation

Overturning Moment

Ovulation Method - Birth control

Owners Manual

Slovakia - Civil aircraft markings - international (PIPO)

Minim Fathers (TOCD)

Old Man (AD)

Old Measurement (AD)

Omit

Omni Mane - Every Morning - Latin (AD)

Operational Monitor (AD)

Organic Matter (AD)

Our Memo (AD)

Outer Marker (AD)

Book of Omni (AD)

Oman (AD)

Omang - Botanist in plant scientific name (HUH)

Ordinance Map (AD)